Improvement in stop-valves



C. E. HUTSON.

Stop Valve.

No. 109.906. Patented Dec. 6, 1870.

' tdaiith $2M CHARLES HUTSON, OF COMMERCE, MISSOURI.

Letters Patent No. 109,906, dated December -6, 1870.

IMPROVEMENT IN STOP-VALVES.

The Schedulev referred to in these Lettei-s Patent and making part of the sa'me. V

T o all whom it may concern 1 Be it known that I, CHARLES EMERY Hu'rsoN, of

Commerce, in the county of Scott and State ot'Mis-.

soul-i, have made certain new and useful Improvements m- Stop-Valves and I do hereby declare that the following is a full and true description thereof, reference being bad to the accompanying drawing and to the letters 'of reference marked, thereon. v

, This-invention relates to. an improvementin stopvalvcsfor water, steam, gas, 8120.; and i '--'lhe nature thereof consists a ltirst, in constructing the valve-shell or body of cylindrical form, having suitable branches for the connectlou of the supply-pipes.

Secondly, in providingsai'd valve-body with a rotary valve, cast with arms in such a manner that the projecting arm of the valve-st'em'shall engage in the incline slot between the arms of the valve and operate the same.

Lastly, said'invention relates to certain detail construction and arrangement of parts for taking up all wear upon the valve-seat and valve-face, hereinafter to be more fully described. Q

To enable those herein skilled to make and use my improved valve I will now more fully describe the same, referring to the accompanying Figure 1 as a sectional elevation; to

Figure 2 as a'top section at line awe"; and to Figure 3 as an isometrical view of the valve proper.

The valve-shell A is of cylindrical form, and proyided with suitable hub and screw-cap connections, in man her usual, the internal surface of said valve-shell forming the seat for the valve B.

The valve B, of segmental form, (corresponding to the interior surface of the shell,) is cast with projecting arms I), having an incline, b, in the slot formed between said arms I), as clearly shown in figs. I and 3.

- The valve-stem O,- in order to operate said valve B, is :cast in form as clearly shown in fig. 1, having corresponding projecting arm 0 suitably incline at its face 0' to engage in the inclined slot of the valve proper.

Said valve-stern U is operated by means of a proper hand-wheel, as-usual.

Within a chamber, 11, of the hub D, and passing aroundthe valve-stem Q, I have arranged a metallic spiral spring, E, resting upon a proper collar, 0, secured to the stem 0. Furthermore, at its lower end, said stem 0 is fitted to engage in a circular slot, e, as shown in fig. 1. I

When operated to close, the tension of the spring E causes a downward tendency of the valve-stem O, and its incline c acting on the incline b of the valve, it is plain that said valve B is thus kept in close contact'with its seat.

By the arrangement of theslot e in the bottom of I the shell suflicient play is formed for the stem 0 in taking up all wear of the valve-face and its seats.

The stem 0, passing through the hub and-cap, is properly packed to prevent leakage, as in the ordinary manner. p

In order to keep the valve-seats free from any scdimentary matter the valve B has its side faces beveled to form knife-edges c, as shown in figs. 2 and 3. Thus, any chokiugaction on the part of the valve. is prevented, as said knife-edges cut through and entirely clear away any deposit of foreign substances whatever, in the action of operating the valve to open and close. M y said improved valve is easily worked under heavy pressure, and as the samereadily adapts itself ranged in combination with the valve-shell A of cylindrical form, and having circular slot-e, substantially as set forth. I

In test-inion y of said invention I have hereunto set my hand in presence of \Vitnesses: O. E. HUTSON.

WILLIAM W. Hermann, R BERT Bonus. 

